Divvy

Dropbox

Evernote

A note manager. Everybody's best kept secret. Another of those "how did I manage before it" apps. I love that it downloads notest to your machine as well as keeping a copy on the server, so your stuff is not hostage to a third party.

The Unarchiver

Thyme

TinkerTool

An application that gives you access to additional preference settings Apple has built into Mac OS X. This allows to activate hidden features in the operating system and in some of the applications delivered with the system.